Advice Needed, Load Development

My 7mag shot H1000 well but I was up around 70gr. Keep bumping the powder up till you find pressure. Your gun was throated for a 180 which means you can't go by book/saami specs because you OAL is longer. Go toward 70 and if it doesn't shoot, then try another powder. Re26 would be great if you can find it. I also see that the barrel is a Proof. Took forever to get my custom 7 SS to shoot with a Proof. It would not shoot any 180 whatsoever. I got the 175s to shoot but was at the absolute upper limit of powder…but it's the only thing it will shoot. This is my last one of their barrels for sure. If Alamo built the rifle it should be a hammer, don't give up yet.
 
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